Packing for light-sensitive layer-carriers.



UNI-TED STATES PATENT oEEreEo JOSEPH SCHMUCK, OF STEGLITZ, NEAR BERLIN, GERMANY, ASSIGNOR TO THE FIRM OF OPTISCHE ANSTALT C. P. GOERZ AKTIENGESELLSCHAFT, OF FRIEDENAU, NEAR BER- LIN, GERMANY.

PACIHNG FOR LIGHT-SENSITIVE LAYER-CARRIERS.

Specification of Lettera Patent.

Application tiled July 22, 1907.

Patented Aug. 10, 1909.

Serial No. 386,073.

To all whom it may concern:

Be .it known that l, JOSEPH Sommet', mechanist, a citizen of the German. Empire., residing at 8 Hubertus-strnsse, Steglitz, near Berlin, Germany, have invented certain new and useful improvements in Parkings for Light-Sensitive Layer-Carriers, of which the following,r is a specification.

This invention relates to improvements in packings for light-sensitive layer carriers.

The improved packingr comprises a lightsensitive layer-carrier such as a photographie film or plate a removable light tight envelop o en at one end and a closing member for t 1e open end of said envelop.

The new packing is of most simple construction and of slight thickness and the envelop thereof can be safely and easily removed from the film, when the incased films are in a box or the like ofthe camera suitable for the exposure of the films.

The purpose of the invention is obtained bysecuringr the closing member effecting the light-tight closure of the interior of the cover, on to the one end of the lilm or plate in such a manner that thc edges of the open envelop are s ueezed between the edges of the closing,r :nem er and the film or the like. The rcmoval of the light-tight cover from the film may, with such construction be oil'ected in a simple and safe manner.

The boxcontainingr the incascd film can be provided with a catch or the like to engage the closing member so as to retain the film in the box, when the light-tight envelop is Withdrawn out of the box.

As in the improved film case the engagement or grip of the closingr member on the envole is slight in order to render the withdrawa of said envelop from the closingIr member possible, care has to be taken that the light does not have access to the interior of the case at this point. For this purpose the sides of the closing member are united together at their ends, so that the groove or slit formed in said closing member for the reception of the film and also the mouth of y kthe closing member for the reception oi the their ends.

The annexed drawing illustrates the inventlon.

edges of the light tight envelop are closed at Figure l is a longitudinal section, perpendicular to the closing member and Fig. 2 is a cross-section, parallel to the edgeof the clos-, ing member.

The film is indicated on the dran-'ingr by u, the lighttight envelop b v and the closing..r member by c. The closing' member c squeezes with its front-edges the open end of the light-tight envelop if and also "Trips thei film (L. When arranging the parts the closing member c is first firmly pressed on to the edge of the film (L, the free edges of 'he closing member not'bcing subjected to any ressurc, so that the open end of the envelop may be pushed between the free edges of the closing member. As soon as thisis donc, the free edges of thc closimgr member c are also subvject-ed to pressure, sniiciently forcible to assure a light-tight closing;A joint and at the same time allowing,r the Withdrawal of the envelop from the closing member.

From Fig. 2 it can be seen that the groove formed by the closing' member is closed at both its ends, that is to say, at both sides of the film.

llaving now particularly described and ascertained the nature of my said-invention and in what manner the same is to be performed, l declare that what l claim is:

An improved packinf.,r for light-sensitive layer carriers, comprising a light sensitive layer carrier, a removable envelop open at one end, and a closingr member forming a receptacle or cap closed on. all sides and at its outer ond, said closing' member being,r directly secured along a portion of the interior of its sides on the edge oi the l yer carrier and the remainder of its sides being,r bent outwardly to Form a space between the layer carrier and the sides of the closing; member for the reception of the end of the envelop, said bent portions of the sides contacting along their whole surface with thclayer carrier.

ln testimony whereof l have signed this specification in the presence ol two subscribe mg witnesses.

JOSEPH SCHMUCK.

Witnesses z HENRY HAsPER, WOLDEMAR HAUPT. 

